Modification of recycled concrete aggregate by calcium carbonate biodeposition

Grabiec, Anna M.; Klama, J.; Zawal, Daniel; Krupa, Daria

doi:10.1016/j.conbuildmat.2012.02.027

Cited by 273 publications

(73 citation statements)

References 15 publications

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“…However recent studies [24,25] have shown that FRA with acceptable features can be attained by tuning the production process and carrying out pre-treatments for property improvement. However methodologies for property improvement were developed aiming at coarse aggregates [26][27][28][29] and their applicability to FRA is not specified.…”

Section: Introductionmentioning

confidence: 99%

Physical, chemical and mineralogical properties of fine recycled aggregates made from concrete waste

Evangelista

Guedes

Brito

et al. 2015

Construction and Building Materials

232

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Section: Introductionmentioning

confidence: 99%

Physical, chemical and mineralogical properties of fine recycled aggregates made from concrete waste

Evangelista

Guedes

Brito

et al. 2015

Construction and Building Materials

232

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“…Another function of bacteria was explored by Grabiec et al (2012) in which they studied the surface modification of recycled aggregate concrete by bio-deposition involving a method of employing Sporosarcina pasteurii (Bacillus pasteurii) bacteria. It was possible to obtain reduction in water absorption of aggregate and the effect was more visible for finer fractions and the aggregates originating from inferior quality concrete.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Bacterial Activity on Compressive Strength of Cement Mortar in Different Curing Media

Thiyagarajan

Maheswaran

Mapa

et al. 2016

ACT

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Recently, bacterial concrete is gaining popularity due to the advantages such as self healing property, increased durability, enhanced strength etc. When living organisms are introduced into cementitious materials, many factors are expected to influence their activity. A conducive environment such as temperature, nutrients, pH etc. is necessary for the survival and intended activity of bacteria in concrete. Among all the influential factors, nutrients for the survival of bacteria in cement mortar is considered in this study. In order to supply nutrients for the bacterial growth, three different curing media such as normal water, Luria Bertania broth (controlled nutrients) and wastewater (uncontrolled nutrients) are chosen. Compressive strength are determined at various stages of curing to study the influence of bacterial activity in cement mortar. Further, X ray diffraction and thermo gravimetric analysis are carried out to understand the transformation in hydration phases with the incorporation of bacteria. From the strength study conducted, cubes cured in waste water showed more strength which indicates that the bacterial activity is more in waste water.

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“…Simultaneously, ammonia ions NH4 + increase pH value in surrounding medium which improves calcite precipitation efficiency. The results showed that this procedure led to reduction in the water absorption of aggregate and this was even more effective when finer fractions derived from inferior quality concrete were used [25]. …”

Section: Calcium Carbonate Biodepositionmentioning

confidence: 88%

Načini Poboljšanja Recikliranog Agregata – Pregledni Rad

Despotović¹

2016

Zbornik GFS

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Modification of recycled concrete aggregate by calcium carbonate biodeposition

Cited by 273 publications

References 15 publications

Physical, chemical and mineralogical properties of fine recycled aggregates made from concrete waste

Physical, chemical and mineralogical properties of fine recycled aggregates made from concrete waste

Investigation of Bacterial Activity on Compressive Strength of Cement Mortar in Different Curing Media

Načini Poboljšanja Recikliranog Agregata – Pregledni Rad

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